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@ -24,8 +24,13 @@ import com.arialyy.aria.core.download.DownloadTaskEntity; |
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import com.arialyy.aria.core.inf.IDownloadListener; |
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import com.arialyy.aria.util.ALog; |
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import com.arialyy.aria.util.BufferedRandomAccessFile; |
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import java.io.FileOutputStream; |
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import java.io.IOException; |
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import java.io.InputStream; |
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import java.nio.ByteBuffer; |
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import java.nio.channels.Channels; |
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import java.nio.channels.FileChannel; |
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import java.nio.channels.ReadableByteChannel; |
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import org.apache.commons.net.ftp.FTPClient; |
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import org.apache.commons.net.ftp.FTPReply; |
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@ -36,10 +41,6 @@ import org.apache.commons.net.ftp.FTPReply; |
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class FtpThreadTask extends AbsFtpThreadTask<DownloadEntity, DownloadTaskEntity> { |
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private final String TAG = "FtpThreadTask"; |
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private boolean isOpenDynamicFile; |
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/** |
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* 2M的动态长度 |
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*/ |
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private final int LEN_INTERVAL = 1024 * 1024 * 2; |
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FtpThreadTask(StateConstance constance, IDownloadListener listener, |
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SubThreadConfig<DownloadTaskEntity> downloadInfo) { |
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@ -49,7 +50,7 @@ class FtpThreadTask extends AbsFtpThreadTask<DownloadEntity, DownloadTaskEntity> |
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mReadTimeOut = manager.getDownloadConfig().getIOTimeOut(); |
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mBufSize = manager.getDownloadConfig().getBuffSize(); |
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isNotNetRetry = manager.getDownloadConfig().isNotNetRetry(); |
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isOpenDynamicFile = STATE.TASK_RECORD.isOpenDynamicFile; |
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isOpenDynamicFile = STATE.isOpenDynamicFile; |
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setMaxSpeed(manager.getDownloadConfig().getMaxSpeed()); |
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} |
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@ -58,7 +59,7 @@ class FtpThreadTask extends AbsFtpThreadTask<DownloadEntity, DownloadTaskEntity> |
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mChildCurrentLocation = mConfig.START_LOCATION; |
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FTPClient client = null; |
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InputStream is = null; |
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BufferedRandomAccessFile file = null; |
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try { |
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ALog.d(TAG, "任务【" |
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+ mConfig.TEMP_FILE.getName() |
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@ -94,31 +95,12 @@ class FtpThreadTask extends AbsFtpThreadTask<DownloadEntity, DownloadTaskEntity> |
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return; |
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} |
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file = new BufferedRandomAccessFile(mConfig.TEMP_FILE, "rwd", mBufSize); |
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file.seek(mConfig.START_LOCATION); |
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byte[] buffer = new byte[mBufSize]; |
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int len; |
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while ((len = is.read(buffer)) != -1) { |
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if (STATE.isCancel || STATE.isStop) { |
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break; |
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} |
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if (mSleepTime > 0) Thread.sleep(mSleepTime); |
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if (isOpenDynamicFile) { |
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file.setLength( |
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STATE.CURRENT_LOCATION + LEN_INTERVAL < mEntity.getFileSize() ? STATE.CURRENT_LOCATION |
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+ LEN_INTERVAL : mEntity.getFileSize()); |
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} |
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if (mChildCurrentLocation + len >= mConfig.END_LOCATION) { |
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len = (int) (mConfig.END_LOCATION - mChildCurrentLocation); |
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file.write(buffer, 0, len); |
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progress(len); |
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break; |
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} else { |
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file.write(buffer, 0, len); |
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progress(len); |
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} |
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if (isOpenDynamicFile) { |
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readDynamicFile(is); |
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} else { |
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readNormal(is); |
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} |
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if (STATE.isCancel || STATE.isStop) return; |
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ALog.i(TAG, "任务【" + mConfig.TEMP_FILE.getName() + "】线程__" + mConfig.THREAD_ID + "__下载完毕"); |
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writeConfig(true, 1); |
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@ -138,9 +120,6 @@ class FtpThreadTask extends AbsFtpThreadTask<DownloadEntity, DownloadTaskEntity> |
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fail(mChildCurrentLocation, "获取流失败", e); |
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} finally { |
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try { |
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if (file != null) { |
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file.close(); |
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} |
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if (is != null) { |
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is.close(); |
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} |
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@ -153,6 +132,92 @@ class FtpThreadTask extends AbsFtpThreadTask<DownloadEntity, DownloadTaskEntity> |
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} |
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} |
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/** |
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* 动态长度文件读取方式 |
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*/ |
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private void readDynamicFile(InputStream is) { |
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FileOutputStream fos = null; |
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FileChannel foc = null; |
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ReadableByteChannel fic = null; |
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try { |
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int len; |
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fos = new FileOutputStream(mConfig.TEMP_FILE, true); |
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foc = fos.getChannel(); |
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fic = Channels.newChannel(is); |
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ByteBuffer bf = ByteBuffer.allocate(mBufSize); |
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while ((len = fic.read(bf)) != -1) { |
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if (STATE.isCancel || STATE.isStop) { |
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break; |
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} |
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if (mSleepTime > 0) { |
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Thread.sleep(mSleepTime); |
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} |
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bf.flip(); |
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foc.write(bf); |
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bf.compact(); |
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progress(len); |
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} |
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} catch (InterruptedException e) { |
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e.printStackTrace(); |
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} catch (IOException e) { |
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fail(mChildCurrentLocation, "下载失败【" + mConfig.URL + "】", e); |
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} finally { |
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try { |
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if (fos != null) { |
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fos.close(); |
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} |
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if (foc != null) { |
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foc.close(); |
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} |
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if (fic != null) { |
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fic.close(); |
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} |
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} catch (IOException e) { |
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e.printStackTrace(); |
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} |
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} |
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} |
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/** |
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* 多线程写文件方式 |
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*/ |
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private void readNormal(InputStream is) { |
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BufferedRandomAccessFile file = null; |
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try { |
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file = new BufferedRandomAccessFile(mConfig.TEMP_FILE, "rwd", mBufSize); |
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file.seek(mConfig.START_LOCATION); |
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byte[] buffer = new byte[mBufSize]; |
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int len; |
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while ((len = is.read(buffer)) != -1) { |
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if (STATE.isCancel || STATE.isStop) { |
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break; |
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} |
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if (mSleepTime > 0) Thread.sleep(mSleepTime); |
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if (mChildCurrentLocation + len >= mConfig.END_LOCATION) { |
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len = (int) (mConfig.END_LOCATION - mChildCurrentLocation); |
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file.write(buffer, 0, len); |
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progress(len); |
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break; |
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} else { |
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file.write(buffer, 0, len); |
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progress(len); |
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} |
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} |
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} catch (IOException e) { |
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fail(mChildCurrentLocation, "下载失败【" + mConfig.URL + "】", e); |
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} catch (InterruptedException e) { |
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e.printStackTrace(); |
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} finally { |
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try { |
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if (file != null) { |
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file.close(); |
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} |
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} catch (IOException e) { |
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e.printStackTrace(); |
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} |
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} |
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} |
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@Override protected String getTaskType() { |
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return "FTP_DOWNLOAD"; |
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} |
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laoyuyu
7 years ago